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Swift-XRT spectra of GRB 080229B

Last updated after receiving ObsID 00020064005, version 18

Data were analysed using HEASOFT version 6.32

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Time-averaged spectrum (T0 + 74857 to 207460 s)

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PC mode spectrum of Time-averaged

PC mode. Mean photon arrival: T0+156998 s

NH (Galactic)1.02 × 1022 cm-2
NH (intrinsic)1.2 (+0.9, -0.7) × 1022 cm-2
z of absorber0
Photon index2.8 (+0.7, -0.6)
Flux (0.3-10 keV)
(Observed)		6.3 (+1.4, -1.1) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)		3.8 (+7.6, -2.0) × 10-12 erg cm-2 s-1
Counts to flux (obs)4.32 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)2.62 × 10-10 erg cm-2 ct-1
W-stat (dof)
What's this?		91.22 (134)
Spectrum exposure17.7 ks